sessionId = searchLog.getClientIp();
            } else {
                sessionId = searchLog.getClientIp() + '_' + searchLog.getSearchWord();
            }

            final LocalDateTime requestedAt = searchLog.getRequestedAt();
            if (sessionId == null || duplicateSessionMap.containsKey(sessionId)

                    appendJson("user-session-id", entity.getUserSessionId(), buf).append(',');
                    appendJson("user", entity.getUser(), buf).append(',');
                    appendJson("search-word", entity.getSearchWord(), buf).append(',');
                    appendJson("hit-count", entity.getHitCount(), buf).append(',');
                    appendJson("query-page-size", entity.getQueryPageSize(), buf).append(',');

            params.put("User Info ID", e.getUserInfoId());
            params.put("User Session ID", e.getUserSessionId());
            params.put("Access Type", e.getAccessType());
            params.put("Search Word", e.getSearchWord());
            params.put("Requested Time", FessFunctions.formatDate(e.getRequestedAt()));
            params.put("Query Time", toNumberString(e.getQueryTime()));